I actually forgot he had prefect memory. We'll split the difference here. Given time, each individual flash will be recalled perfectly. However, it was simply physically impossible for him to take in everything, so he might be missing details. And it will be a while before he can sort out everything he saw.

Imagine being on the inside of a sphere, the walls covered in video screens, each showing different things. However, the sphere exists in five dimensions, so square the number of screens, and then square it again. You are somehow able to see all of them at once. That's simply beyond the level these characters work at. That's beyond the level The Doctor could work at.

"The trasportation system was originally developed in the first decade of the 20th century. It's initial trial run was set for 7 PM, June 30th, 1908, with the goal of transport from a FEND laboratory in New York City, to a remote location in Siberia. The need for equivalent mass return was unknown at the time, and the resulting explosion became known as the Tunguska Event."